Sener Bedrettin Cem, Dergin Guhan, Gursoy Bahar, Kelesoglu Ergun, Slih Imad
Department of Oral and Maxillofacial Surgery, Marmara University, School of Dentistry, Istanbul, Turkey.
Clin Oral Implants Res. 2009 Mar;20(3):294-8. doi: 10.1111/j.1600-0501.2008.01643.x.
Thermal injury during implant bed preparation has a major influence on implant osseointegration and survival. This study investigated the effectiveness of the temperature of the saline solution used for heat control during drilling.
Fresh frozen edentulous segments of bovine mandibles were sectioned into 12 x 6 cm pieces. Thermoresistors were placed 0.5 mm from the drilling cavity walls, at depths of 3, 7, and 12 mm. Signals from the three thermoresistors were analyzed using ORIGIN 5.0 software.
The maximum temperatures during drilling without irrigation were 50.9, 47.4, and 38.1 degrees C at depths of 3, 7, and 12 mm, respectively. With irrigation using saline at 25 and 10 degrees C, the maximum temperatures at a depth of 12 mm were 37.4 and 36.3 degrees C, respectively. All other measurements with both 25 and 10 degrees C saline were below body temperature.
This experimental in vitro study showed that more heat was generated in the superficial part of the drilling cavity than at the bottom. Therefore, external irrigation at room temperature can provide sufficient cooling during drilling. Lower temperature saline was more effective in cooling the bone, and irrigation of the site should be continued between the drilling steps.
种植床制备过程中的热损伤对种植体骨整合及存活有重大影响。本研究调查了钻孔过程中用于热控制的盐溶液温度的有效性。
将新鲜冷冻的牛下颌无牙节段切成12×6厘米的小块。将热敏电阻放置在距钻孔腔壁0.5毫米处，深度分别为3、7和12毫米。使用ORIGIN 5.0软件分析来自三个热敏电阻的信号。
无冲洗钻孔过程中，3、7和12毫米深度处的最高温度分别为50.9、47.4和38.1摄氏度。使用25摄氏度和10摄氏度的盐水冲洗时，12毫米深度处的最高温度分别为37.4和36.3摄氏度。使用25摄氏度和10摄氏度盐水的所有其他测量值均低于体温。
这项体外实验研究表明，钻孔腔表面产生的热量比底部更多。因此，室温下的外部冲洗在钻孔过程中可提供足够的冷却。较低温度的盐水在冷却骨骼方面更有效，并且在钻孔步骤之间应持续冲洗该部位。
